He also published Freedom of Simplicity in 1981, which further explores the discipline of simple, intentional living, Freedom of Simplicity.[5]Prayer: Finding the Heart's True Home (1992, ISBN 0-06-062846-4), which explores 21 different types of Christian prayer, edited Devotional Classics (1993, ISBN 0-06-066966-7), a devotional guide featuring Christian wisdom through the ages, and Streams of Living Water (2001, ISBN 0-06-062822-7), which examines the place of the different spiritual traditions - Contemplative: The Prayer-Filled Life; Holiness: The Virtuous Life ; Charismatic: The Spirit-Empowered Life; Social Justice: The Compassionate Life; Evangelical: The Word-Centered Life; and Incarnational: The Sacramental Life - in Christianity.